Schema:
player (Player_ID, Sponsor_name, Player_name, Gender, Residence, Occupation, Votes, Rank)
club (Club_ID, Club_name, Region, Start_year)
coach (Coach_ID, Coach_name, Gender, Club_ID, Rank)
player_coach (Player_ID, Coach_ID, Starting_year)
match_result (Rank, Club_ID, Gold, Big_Silver, Small_Silver, Bronze, Points)
Please answer with SQL.